package cn.tedu;

public class Bullet {
    int x=-300;
    int y=-300;
    //隐藏


    int width=5;
    int height=10;
    int flag=0;

    public void move(){
        this.y--;
        if(this.y<-50){
            this.flag=0;
        }else{
            this.flag=1;
        }
    }
}
